170 SUB-ALPINE PLANTS 



Artemisia incanescens Jord. 



Plant 1-2^ feet high, smelling like terebinth, covered with 

 white tomentum, especially in the upper portion, the stem being 

 almost glabrous below. Leaves white-felted on both sides, not 

 spotted, divisions of leaflets linear. Flowering heads shortly stalked 

 and forming a long, loose panicle. 



Dry, hot, and stony places in the mountains up to about 5000 

 feet, as near La Grave in Dauphin^ ; local. September. 



Distribution. — Departments of Hautes-Alpes, Basses-Alpes, and 

 the Var in France ; Spain, Italy. 



Achillea L. 



Leaves alternate, much divided or rarely simple Flower-heads 

 small, in a terminal corymb with white or pink rays and a yellow 

 disk. Involucres ovoid or hemispherical, the bracts imbricated, 

 slightly scarious at the edges. Receptacle small, not convex. 

 Achenes without any pappus. 



A considerable European and West Asiatic genus. 



Achillea Clavence L. 



Stem erect, 3-8 inches high, leafy, and, like the leaves, covered 

 with a grey felt of silky hairs, bearing at the summit a cluster of 

 capitula in a corymbose cyme. Leaves obovate-lanceolate or wedge- 

 shaped, simply pinnatifid, with linear teeth. Ray-flowers 6-8, as 

 long as the involucre, or longer. Capitula large ; involucral bracts 

 with a black margin ; ray white ; disk greenish yellow. 



On rocks and debris of the calcareous Alps ; 5000-7000 feet. 



Common (in the Eastern Alps) and sometimes descending the 

 valleys. 



Distribution. — Eastern and Central Alps. In Switzerland only 

 on Monte Generoso. 



Achillea Ptarmica L. Sneezewort. 



Stems 1-2 feet high, erect, glabrous, branched only at the top. 

 Leaves broadly linear, regularly serrate. Flower-heads few, in a 

 loose terihinal corymb. Involucres hemispherical, rather cottony, 

 larger than in the Milfoil. Ray-florets from 10-15, short, broad, 

 white ; disk-florets numerous, interspersed with linear scales. 



Damp, hilly pastures, becoming a mountain plant in Southern 

 Europe, where, e.g. on the Col des Montets on the Franco-Swiss 

 frontier it ascends to 5000 feet. August, September. 



Distribution. — Most of Europe, except the Mediterranean region, 

 Russian Asia. Britain. 



Achillea Millefolium L. Milfoil or Yarrow. 



Leaves rather villous, especially on the back, or sometimes 

 glabrous. Lobes linear-lanceolate. Flowers white or often pink, 



